beeper 0.1.4

Application-layer parsing in eBPF
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//! Build script support for programs that use a Beeper parser.
//!
//! Enable the `build` feature and call [`clang_args`] from the build script of
//! the crate whose BPF programs include Beeper's headers.

use std::{ffi::OsString, path::Path};

/// Returns the clang arguments that make `beeper/beeper.h` and the protocol
/// headers next to it includable, i.e. the include path of Beeper's own headers.
///
/// Pass them to the skeleton builder that compiles the BPF programs of the
/// calling crate.
///
/// # Examples
///
/// ```no_run
/// // build.rs
/// use beeper::build::clang_args;
/// use xbpf::build::Builder;
///
/// fn main() {
///     Builder::new()
///         .clang_arg(clang_args().iter())
///         .tracing_ring_buf_size(16384)
///         .export_headers()
///         .build();
/// }
/// ```
pub fn clang_args() -> Vec<OsString> {
    let path = Path::new(env!("CARGO_MANIFEST_DIR")).join("include");
    println!("cargo:rerun-if-changed={}", path.display());
    vec![OsString::from("-I"), OsString::from(path)]
}